Results obtained by processing a corpus of 2675 medical titles indicate that several properties definable in terms of inclusion relationships among terms have significance for vocabulary control. (Author)

Describes an automatic display system which has been developed for the editing of concept subnetworks within a relational index and which employs only a floppy diskette drive and a PET 2001 microcomputer. Appendices on Farradane's Nine Relations and on the Graphic Editing System Commands and a reference list are included. (Author/JL)

Presents a computer-based system for generating thesauri from modulated subject-propositions (subject headings), which are structured according to facet analysis and augmented with appropriate codes for relating terms. Input to and operation of the system are described, as well as the programs developed. Fifteen references are listed. (Author/BK)

Following a discussion of derivative versus assignment indexing, use of roles, and concept behind Preserved Concept Indexing System, features of PERMDEX (microcomputer program to assist in creation of permuted printed index) are described including indexer input and prompts, the shunting algorithm, and sorting and printing routines. Fourteen…

A pilot study to develop a feasible multi-media index to regional material has just been completed. Its primary objective is to develop a tool for general user access to information in various formats by combining old and new methods and techniques of information retrieval. Simple computer programs manipulate the information on 106 sample items to…

A modified Keyword Out of Context (KWOC) system was developed to gain rapid control over more than 8,000 scattered, unindexed documents. This was the first step in providing the technical information support required by Air Force Rocket Propulsion Laboratory scientists and engineers. Implementation of the KWOC system, computer routines, and…

The purpose of this document is to present a final description of the original MEDLARS system as it evolved through four years of operation. The system is described as it was functioning on January 1, 1968. Among the various system elements discussed are: (1) the input subsystem, including journal selection and coverage, Medical Subject Headings…

The broad objective of this investigation was to explore the potential and applicability of automatic methods for the indexing of drug-related information appearing in English natural language text and to find out what can be learned about automatic indexing in general from the experience. More specific objectives were the development,…

NETPAD is a microcomputer-based system, implemented on a Commodore PET 2001-8, by which a human indexer can input, retrieve, and edit information in order to produce a variety of permuted index displays. The basic unit of the NETPAD system is a subnetwork (a description of a single document) containing a set of concept nodes (author, title, date,…

This paper describes a computer-assisted printed index which provides expanded subject access to the more than 6000 titles in the Iowa State University Library reference collection. Designed to complement existing catalogs with a minimum of duplication of information, the index displays abbreviated length records. The limitations of subject access…

A description of a retrospective document retrieval system is given in which equifrequent fragments are used as language elements for compression coding and retrieval. The critical parameters governing the system are identified, and restrictions imposed by the parameters on the selection of fragments are outlined. Changes necessary in the…

Three specific contributions to the field of information retrieval are presented. The first two describe the establishment of an adaptive, interactive man-machine dialogue that produces a form of unsolicited librarian-like assistance for the user in his selection of index terms to characterize an indexing function. The data set upon which the…

Describes technique for automatic book indexing requiring dictionary of terms with text strings that count as instances of term and text in form suitable for processing by text formatter. Results of experimental application to portion of book text are presented, including measures of precision and recall. Ten references are noted. (EJS)

The Tennessee Research Coordinating Unit (RCU) has implemented a computerized information retrieval system known as "Query," which allows for the retrieval of documents indexed in Research in Education (RIE), Current Index to Journals in Education (CIJE), and Abstracts of Instructional and Research Materials (AIM/ARM). The document…